CatStation/Content.Shared/Tabletop/TabletopSetup.cs

using Robust.Shared.Prototypes;
using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;

namespace Content.Shared.Tabletop;

[ImplicitDataDefinitionForInheritors]
public abstract partial class TabletopSetup
{
    /// <summary>
    ///  Method for setting up a tabletop. Use this to spawn the board and pieces, etc.
    ///  Make sure you add every entity you create to the Entities hashset in the session.
    /// </summary>
    /// <param name="session">Tabletop session to set up. You'll want to grab the tabletop center position here for spawning entities.</param>
    /// <param name="entityManager">Dependency that can be used for spawning entities.</param>
    public abstract void SetupTabletop(TabletopSession session, IEntityManager entityManager);

    [DataField]
    public EntProtoId BoardPrototype;
}